John kubler



Nrrnn STATES PATENT rricn.

JOHN KUBLER, OF HOT SPRINGS, ARKANSAS, ASSIGNOR TO DANIEL B.

\ TEABEAUT, OF THOMASVILLE, GEORGIA.

LOCK.

SPECIFICATION forming part of Letters Patent No. 447,957, dated March 10, 1891.

Application led June 28 1890. Serial No. 35 7,051- (No model.)

To all whom it may concern:

Be it known that I, JOHN KUBLER, a citizen of the United States residing at Hot Springs, in the county of Garland and State of Arkansas, have invented certain new and useful Improvements in Three-Bolt Door-Locks, of which the following is a specification.

My invention relates to locks; and it consists in a novel construction ot' the same, as hereinafter set forth and claimed.

In the drawings, Figure l is a perspective view of a door, showing my lock applied thereto; Fig. 2, a face View of the mechanism of the lock, showing the parts in their unlocked position, and Fig. 3 a similar view with the position ot' the parts reversed.

A indicates the lock-case, and B B B2 the bolts. One ot these bolts B2 consists merely of a straight bar having a sloto. at its inner end, while the other bolts B B are made of an L-shaped bar having a slot a at the inner end atthe point where the two bolts join, the bars or bolts being guided in their movements by pins or studs b b', secured to the back plate of the lock-case and by slots or openings c o in the rim or flange.

O C' indicate two levers having slots d d' at their outer ends to receive pins or studs e e', carried, respectively, by the bolts B2 and B B', the levers C C crossing each other and pivoted upon a pin f at the point of crossing, as shown in Figs. 2 and 3. The levers are provided, respectively, with tails g g', which extend rearwardly in position to be acted upon by a stud h or a roller It' thereon, or by lugs fr' i', mounted upon a sliding plate D, according to the direction in which said plate is moved. The stud h is arranged in line with the pivot f, and is designed to work in between the tails of the levers and throw them apart, while the lugs t' i are designed to work against the outer faces of the tails of the levers and throw them together, the

stud and thelugs of course acting alternately.

Plate D rests upon the back plate of the shell or case A, and will be guided in its movements by suitable lugs j k, projecting from the back plate of the case A into suitable slots in the sliding' plate, as shown in Figs. 2 and 3. The plate D will be further provided with a lug Z, with which the tumbler or tumblers E are designed to engage.

The normal position of the parts is shown in Fig. 2, upon reference to which it will be observed that the tumblers are in engagement with the lug Z on the plate D and prevent the actuation of the latter.

By inserting the proper key the tumblers will be thrown out of engagement with the lu g and the plate moved forward, and as the plate thus moves the stud 7L or its roller h will enter between the tails g g and throw the levers apart. As the levers are thrown apart the bars or bolts B2and B will be projected from the case A, as represented in Fig. 3; When the plate is moved in the reverse di" rection, the lugsz' 1",.aoting upon the outer faces of the tails, will throw them toward each other and bring the outer ends of the levers together, as shown in Fig. 2, and as the ends of the levers thus approach they draw the bolts B2 and B inward toward each other.

The bolts B2 and B' are designed to enter keepers F F', secured, respectively, to the to of the door-casing and floor, while the boltB is designed to engage keeper F2, secured to the side of the door-casing opposite the lock.

. From this description it will be seen that the door is securely held not only at the top and bottom, but also at the side.

In order to guide and support the bars B2 and B', the door will be provided with guides or oops G G', through which the bars freely sli e.

Having thus described myinvention, what I claim is 1. In a lock, the combination, with the crossed levers C C and the bolts orbars connected therewith, of the sliding plate D, provided with lugs t' e" ,and a stud h to work, respectively, against the outer and inner faces of the tails of the levers, substantially as shown and described.

2. In a lock, the combinatiomwith the slotted bolt B2 and the slotted bolt B B', of the crossed levers C C', connected with the bolts, a sliding plate D, provided with lugse'ql', and

stud h to act alternately upon the levers, sub- D, provided with lugs ii', and stud h for actustantially as shown and described, `and tumating the levers, all substantially as shown. 1o

blers and guiding-lugs. In witness whereof I hereunto set my hand 3. In L look, the combination, with the bar in the presence of two witnesses. 5 B2, of the L-shaped bar or bolt B B', project- JOHN KUBLER.

ing from two faces of the lock-oase, keepers l/Vtnesses: i F F F2 for Jche bars or bolts, the crossed le- CYRUS JOHNSON,

vers connected with the bolts, and the plate GEORGE IIEID. 

